APA-Zitierstil (7. Ausg.)

Pennington, M. B. (1987). Thomas Merton, brother monk: The quest for true freedom (1. ed.). Harper & Row.

Chicago-Zitierstil (17. Ausg.)

Pennington, M. Basil. Thomas Merton, Brother Monk: The Quest for True Freedom. 1. ed. San Francisco u.a: Harper & Row, 1987.

MLA-Zitierstil (9. Ausg.)

Pennington, M. Basil. Thomas Merton, Brother Monk: The Quest for True Freedom. 1. ed. Harper & Row, 1987.